I just got the minn kota edge 55 12V. I had to end up getting a new receptacle instead of a few other options I was going to try. when I asked the marine dealer to get me a receptacle for it, he gave me one with 4 prong holes (so my male end on the trolling would have 4 prongs). The question I wanted to ask is do I need the 4 prong or do I need something else, like a 2 prong or 3 prong. I'm running the receptacle straight to the battery with an in-line circuit breaker. (It's only one battery also, no series or parallel), hope this is enough information.